Unipolar Modulation for a BLDC Motor With Simultaneously Switching of Two Transistors With Closed Loop Control for Four-Quadrant Operation

Baszyński, M.; Пирог, С.

doi:10.1109/tii.2017.2723962

Cited by 17 publications

(9 citation statements)

References 18 publications

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“…These approaches are H-PWM-L-ON, H-ON-L-PWM, PWM-ON, ON-PWM, PWM-ON-PWM, and H-PWM-L-PWM (called double unipolar or modified bipolar approaches). The detailed operating characteristics and comparative performance of these PWM techniques have been explored in many studies [21][22][23][24][25][26][27][28]. These unipolar approaches, in the two active phases that should be excited positively and negatively in accordance with rotor position, can be implemented by operating the upper (positively excited phase) and lower (negatively excited phase) switches using the PWM or ON mode, respectively.…”

Section: Pwm Methods For Three-phase Bldc Motor Inverter Systemsmentioning

confidence: 99%

“…In a typical BLDC motor control system, only one PWM method is used regardless of the operating region [17][18][19]. However, among the various PWM methods for BLDC motors, each PWM method has different advantages and disadvantages depending according to the speed region [20][21][22][23][24][25][26][27][28]. Therefore, as shown in Figure 1, the overall performance can be improved by using one PWM method suitable for sensing the DC-link current at low-speed and the other PWM method which can reduce the current ripple of the high-speed motor at high-speed.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid PWM Control for Regulating the High-Speed Operation of BLDC Motors and Expanding the Current Sensing Range of DC-link Single-Shunt

et al. 2019

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This study developed a hybrid pulse width modulation (PWM) control method intended for use in a high-speed brushless dc (BLDC) motor drive system that uses DC-link single-shunt current measurement. The method is designed to regulate rapid operation and expand the current sensing range of the aforementioned system and measurement, respectively. The operating characteristics of most typical PWM methods for BLDC motors were analyzed, after which, a PWM approach suitable for high-speed operation was identified. On the basis of the selected approach, the measurable range of DC-link single-shunt current was examined mathematically to determine a PWM method that is advantageous for current sensing. The results of the two analyses were used as guidance in formulating the proposed hybrid PWM control algorithm. Finally, the PWM method put forward in this work was verified through experimentation.

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Section: Pwm Methods For Three-phase Bldc Motor Inverter Systemsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid PWM Control for Regulating the High-Speed Operation of BLDC Motors and Expanding the Current Sensing Range of DC-link Single-Shunt

et al. 2019

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“…A different control technology has also been proposed in recent years for improving the torque ripple performance of BLDC motor. Several PWM method has been used to reduce ripple current likes PWM chopping, space vector modulation (SVM), and overlapping method [Baszynski, M. et al, 2018;Lad, C. K. et al, 2018]. The duty ratio is controlled by controlling the PWM algorithm to enhance the performance of BLDC motor [Lee, Y., 2019].…”

Section: Figure 1 Ideal Case Of Bldc Motormentioning

confidence: 99%

Design and Development of Experimental Based Phase Modulated Model Predictive Control for Torque Ripple Reduction of MMC Fed BLDC Motor

Jaiswal

Agarwal²,

Negi³

et al. 2021

JER is an international, peer-reviewed journal that publishes f

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This article represents the torque ripple performance of modular multilevel converter (MMC) fed brushless dc (BLDC) motor using different current control technique. For reducing the ripple current in BLDC motor, a phase-modulated model predictive control (PMMPC) technique has been proposed. The stator ripple current is almost negligible using PMMPC. This PMMPC current control method is a significant minimization of torque ripple in BLDC motor. A comparative torque ripple behaviour of MMC fed BLDC motor has been done using phase-modulated model predictive control, model predictive control (MPC) and proportional integral (PI) control at different switching frequency. It has been observed that a PMMPC current control technique is more efficient as compared to the MPC as well as PI current control technique. It has also been observed that the torque ripple performance is improved while using PMMPC as compared to the MPC and PI controller. Simulation results have been verified with the help of experimental result and these results are obtained in good agreement to the simulated results.

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“…For the application of a classic inverter for the BLDC drive, it is promising to solve this problem from modulation schemes. The unipolar PWM pattern was introduced by [16] and [17], in which the chopper is alternately performed by upper and lower switches. In this way, the equivalent switching frequency is doubled and the PWM delay can be reduced by half.…”

Section: Introductionmentioning

confidence: 99%

PWM Switching Delay Correction Method for High-Speed Brushless DC Drives

Yang

Bao

2021

IEEE Access

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For high-speed brushless DC (BLDC) drives, the switching-to-fundamental frequency ratio is usually insufficient. As a result, the commutation errors caused by PWM switching delay are significant, which means the power switches will take action at inaccurate instants. This will cause low-frequency current oscillations and produce additional losses. In addition, the conventional commutation PWM method will cause accumulative errors in the sensorless operation and will further lead to instability issues in the high-speed region. In order to suppress these influences, a novel carrier-synchronized commutation PWM strategy is proposed in this paper. It shows that the proposed strategy can eliminate the commutation error caused by PWM switching delay. In addition, the instability phenomenon can be avoided and the current control performance is greatly improved. Finally, the proposed strategy is verified by simulation and experiments on a 78,000-r/min BLDC drive platform.INDEX TERMS Brushless DC (BLDC) motor, commutation delay, forced commutation, high-speed, pulse-width modulation (PWM), sensorless control.

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Unipolar Modulation for a BLDC Motor With Simultaneously Switching of Two Transistors With Closed Loop Control for Four-Quadrant Operation

Cited by 17 publications

References 18 publications

Hybrid PWM Control for Regulating the High-Speed Operation of BLDC Motors and Expanding the Current Sensing Range of DC-link Single-Shunt

Hybrid PWM Control for Regulating the High-Speed Operation of BLDC Motors and Expanding the Current Sensing Range of DC-link Single-Shunt

Design and Development of Experimental Based Phase Modulated Model Predictive Control for Torque Ripple Reduction of MMC Fed BLDC Motor

PWM Switching Delay Correction Method for High-Speed Brushless DC Drives

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